This will secure work for up to three years for staff at the boatyard in Holyhead and further cements their reputation for quality in military and commercial circles.

That reputation has seen them win work as far afield as Australia with their skilled staff currently completing the third pilot vessel for the Sydney Ports Corporation as part of a £3m deal and they are seeking a major contract in the Middle East.

Holyhead Marine Services are part of the Holyhead Group that with sister firms Holyhead Towing and Turbine Transfers now employ 400, with up to 150 on Anglesey. With the MoD contract secured and the off-shore windfarm industry booming further expansion is expected in the coming years. This could be boosted by plans for a giant off-shore windfarm in the Irish Sea if Holyhead is chosen as the base port.

The only issue on the horizon is concerns over a skill shortage with the company saying it is difficult to recruit sufficient suitably skilled young workers.

Managing director Nick Colin York, from Holyhead Marine Services, said: "Business is booming at the moment and it means we are now filling up the extra space created by our expansion (in 2012).

“We have also invested £300,000 in equipment, supported by an £80,000 grant from the Welsh Government.

"It means we can increase the throughput of vessels here which in turns means creating more jobs.

“Our staff levels have gone up from 51 to 58 in recent years and we are also looking to take on another eight staff."

He added: “We are chasing work all over the world from the Middle East to Australia. This is for both commercial and military work.

"We are picky about the contracts that we go after, we target the ones that we are hopeful of winning and focus on these rather than a scatter gun approach.

“It means we have a good hit rate on the contracts we go after.

"We won a contract to provide pilot boats to the Sydney Ports Corporation at Sydney Harbour. We have supplied two boats so far and a third will be delivered next year.

"We are now hoping to win more work in Australia.

"We have also secured a second contract with the MoD to provide another six 15m Patrol Craft for the MoD Police , that contract is worth £7m to us and will keep us in work for another two and a half/three years.

"The company is also building two boats for sister company Turbine Transfers.

“The off-shore wind turbine market is a growth area but we have to also ensure we keep taking on external work in military and other commercial sectors as well."

As well as boat building Holyhead Towing and Turbine Transfers have crews all over the world working in various sectors, from oil production to windfarms and dredging work.

Turbine Transfers, which operates fast catamarans for the transfer of personnel and equipment between the shore and wind turbines, are flourishing from the growth of the renewables sector.

Alan Darroch, from the Holyhead Group, said: “The key for us has been providing excellent service and another of our strengths has been our diversification so that if one market goes down another goes up. Our vessels are involved in both renewable energy and oil so we have both sectors covered.

“We employ around 400 now and we will certainly employ more people going forward, whether this will be on Anglesey or away from the island remains to be seen.

“There are plans for the Rhiannon windfarm in the Irish Sea. If Holyhead port is chosen as a base for the development this would be good news for us and good for the Holyhead as well. It will bring benefits and jobs for the area. The challenge going forward is finding sufficient numbers of suitably skilled people to meet our needs.”